Improvement in voltaic plasters



UNITED STATES PATENT EEIGE.

WARREN B.'POTTER, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN VOLTAlC PLASTERS.

Specification forming part of Letters Patent No. l 87.3 l0, dated February 13, 1877; application tiled January 19, 1877.

To all whom it may concern: my improved plasters, and Fig. 2 is a longitud- Be it known that I, WARREN BMLEY inal section, enlarged for clearness. A is the POTTER, of Boston, Suffolk County and State medicated compound; B, the cottoncloth back of Massachusetts, have invented an Improved ing; C, the voltaic plates; and D, the strip of Voltaic Plaster, of which the following is a cloth holding the plates in place.

full, clear, concise, and exact description, ref- I commonly use six plateszinc and copper erence being had to the accompanying draw alternatelyand six holes through the plaster;

ings, making a part hereof. but the number may be varied. I also com- My invention relates to the mode of applyi ing the voltaic plates to the plaster. My improved plaster consists of a sheet of medicated adhesive compound of any suitable ingredientsthe ingredients being too well known to need description-mounted upon a sheet of cloth, leather, or other suitable material, and a series of metal plates; these elements being all old and well known, and forming no part ot' my present invention; but heretofore these plates have usually been applied to the front of the plaster, being imbedded in or stuck to the adhesive sheet of medicated compound; while in my improved plaster these metal plates are applied to the back of the plaster, and a series of holes is punched through the plaster, exposing a portion of the plates, so that when in use the plaster and its backingsheet of cloth lic between the skin and the plates. The plates are best secured in position by a strip of cloth cemented over them and upon the cloth back of the plaster. For convenience, I use the adhesive compound, of which the plaster is made, as a cement.

In the drawings, Figure 1 is a plan of one of The plates are ordinarily connected together by passing a projection from one through an oriiice in the other; but this is not necessary in my improved plaster, when the plates are secured to the plaster, as shown in the drawcemented in place, will not only hold the plates to the plaster, but will also keep the plates in proper relation to each other. The plates may be arranged in a line, as shown, or in a variety of other ways.

What I claim as my invention is- The improved voltaie plaster above described, having the voltaic plates secured to the back of the plaster, and holes cut through the plaster, above the plates, as and for the purpose specified; so that, when` in use, the plaster shall lie between the plates and the skin.

WARREN B. POTTER.

Witnesses:

J. E. KNOX, t GEO. O. G. OOALE.

,monlyperforate the plaster to make it porous. l

ings; for the strip of cloth D, when properly 

